Hybrid Senior .NET Full-Stack Tech Lead

Eliassen Group; Reston (VA); Hybrid; Confidential; Full time

Job summary

Eliassen Group seeks a Sr. .NET Developer II to act as a senior full-stack engineer and technical lead, building enterprise apps with .NET and React. Lead architecture, tooling decisions, CI/CD, and best practices while mentoring developers and collaborating with stakeholders.

The role requires a US Secret clearance, is hybrid with Reston, VA 2–3 days onsite, and offers a competitive salary and benefits. W2 employment is required.

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent experience.
• Active Secret clearance and local to the DMV area with onsite requirements in Washington, DC.
• 8+ years of progressive .NET development experience with senior engineering or technical lead responsibilities.
• Proven architecture and technology selection experience for enterprise applications with the ability to articulate decisions and tradeoffs.
• Proficiency in React including hooks, component design, state management, and responsive UI development.
• Experience developing server-side applications or APIs with Node.js.
• Professional use of AI-powered developer tools such as GitHub Copilot, OpenAI Codex, or similar assistants.
• Hands-on experience with Microsoft Power Platform including Power Apps, Power Automate, and Power BI, with sound judgement on low-code suitability.
• Working knowledge of Microsoft Dataverse including data modeling, table configuration, relationships, and security roles.
• Experience supporting or modernizing SharePoint-backed systems across SharePoint Online and SharePoint 2013 or newer.
• Deep experience with MS SQL, Entity Framework, and RESTful API design and consumption.
• Experience establishing or maturing CI/CD pipelines and deployment workflows with strong Git fundamentals.
• Experience leading code reviews, setting coding standards, and mentoring developers.
• Strong understanding of application security concepts, Active Directory, and identity and access patterns in enterprise environments.
• Familiarity with Microsoft 365 and Office including SharePoint Online, Teams, Outlook, Excel, Word, and OneDrive.
• Excellent communication skills with the ability to present technical recommendations to engineering teams and non-technical stakeholders.
• Ability to work onsite in a federal environment, including occasional Saturday hours for deployment activities.

Responsibilities

• Serve as the trusted primary point of contact for stakeholders submitting requests, delivering a responsive, professional, and customer-first experience.
• Review and triage incoming intake requests, assessing scope, priority, complexity, and completeness, and follow up with customers to clarify objectives and gather missing information.
• Elicit, document, and translate customer business needs into clear, well-structured requirements that delivery teams can act on.
• Route requests to the appropriate solutions architects and analysts to engage the right resources for the best response, recommendation, or proposal.
• Coordinate across solutions architects, analysts, and development teams to shepherd each request from submission through proposed solution, tracking status and removing roadblocks.
• Communicate status, timelines, and proposed solutions back to customers in clear, non-technical language, managing expectations throughout the engagement lifecycle.
• Monitor intake volume, response times, and engagement metrics; identify trends, recurring needs, and opportunities to streamline the intake-to-delivery process.
• Refine and continuously improve workflow, triage criteria, and routing logic based on customer feedback and operational data.
• Maintain accurate records of customer interactions, requirements, decisions, and outcomes to support transparency, reporting, and program governance.
• Build and sustain strong working relationships with customers and internal delivery teams, advocating for the customer while balancing program priorities.

Skills

C#

ASP.NET MVC

ASP.NET Core

React

Node.js

Power Platform

Power Apps

Power Automate

Power BI

Entity Framework

RESTful API

SQL Server

Git

CI/CD

Code reviews

Active Directory

Education

Bachelor's degree in Computer Science or related field

Tools

GitHub Copilot

OpenAI Codex

Job description

Eliassen Group seeks a Sr. .NET Developer II to act as a senior full-stack engineer and technical lead, building enterprise apps with .NET and React. Lead architecture, tooling decisions, CI/CD, and best practices while mentoring developers and collaborating with stakeholders.

The role requires a US Secret clearance, is hybrid with Reston, VA 2–3 days onsite, and offers a competitive salary and benefits. W2 employment is required.